I pissed of with YT! I had a video about a month without any problem. Today i create 2 new accounts and i uploaded 1 video to each account. Some hours later all my videos were deleted. I dont know why!!! Every account i made i used fresh IP (i have dynamic IP and i restart everytime my router and delete cookies, etc).

Probably they recognize the range of the IP (because ISP changes the last digits from the IP) that are the same pc. I cant find other explanation ...

I see there are many deleted videos on almost every niche. It seems like they are deleting videos which were using ranked with unlisted method, i just found some of my videos which are month + old deleted, but only those which i ranked with 301. So it seems like they ban those 301 videos pretty quickly now.